--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Console\Descriptor;
+
+use Symfony\Component\Console\Output\OutputInterface;
+
+/**
+ * Descriptor interface.
+ *
+ * @author Jean-François Simon <contact@jfsimon.fr>
+ */
+interface DescriptorInterface
+{
+ /**
+ * Describes an InputArgument instance.
+ *
+ * @param OutputInterface $output
+ * @param object $object
+ * @param array $options
+ */
+ public function describe(OutputInterface $output, $object, array $options = array());
+}